java操作redis学习(一):安装及连接
文章参考自:http://www.cnblogs.com/edisonfeng/p/3571870.html,在此基础上进行了修改。
一、下载安装 Redis
redis 官网显示暂时不支持 Windows 平台,如果需要的话,使用微软的开源组织开发的 64 为版
点击Learn more进入 github,选择发布版进行下载下载
这里使用最新版,解压后的目录结构:
几个 exe 程序的功能:
redis-benchmark.exe:性能测试,用以模拟同时由 N 个客户端发送 M 个 SETs/GETs 查询 (类似于 Apache 的 ab 工具).
redis-check-aof.exe:更新日志检查
redis-check-dump.exe:本地数据库检查
redis-server.exe:服务端
将文件夹路径加入环境变量(不添加的话就直接 cmd 进入该路径),然后 cmd 运行命令:redis-server启动
不关闭此控制台的情况下,另外打开一个控制台,输入命令:redis-cli ping 进行测试,收到 PONG
二、下载 Jedis.jar
官网上描述 Java 操作 Redis 可以通过 Jedis 也可以通过 Lettuce,本例中使用 Jedis。
https://github.com/xetorthio/jedis/releases
下载下来后是源文件的格式。。。需要编译成 JAR 包使用
使用 maven 命令进行编译,进入该目录,使用命令:mvn install -Dmaven.test.skip,出现BUILD SUCCESS表示编译成功。
PS:哪位大神能帮我解释一下我使用 mvn clean package 命令进行编译打包会报错,最后不成功。
三、Java 项目进行基本操作:
结构目录:
ReidsUtils.java(工具类,提供获取 Jedis 和 SharedJedis 的入口)
package com.yoki.edu.utils;import java.util.ArrayList;
import java.util.List;import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
import redis.clients.jedis.JedisShardInfo;
import redis.clients.jedis.ShardedJedis;
import redis.clients.jedis.ShardedJedisPool;public class RedisUtils {
// private Jedis jedis;// 非切片额客户端连接
private static JedisPool jedisPool;// 非切片连接池
// private ShardedJedis shardedJedis;// 切片额客户端连接
private static ShardedJedisPool shardedJedisPool;// 切片连接池<span style="color: rgba(0, 0, 255, 1)">static</span><span style="color: rgba(0, 0, 0, 1)">{ </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 初始化非切片池</span> JedisPoolConfig config = <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> JedisPoolConfig(); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">setMaxActive在commons-pool2-2.4.2.jar不适用,改为了setMaxTotal</span> <span style="color: rgba(0, 128, 0, 1)">/*</span><span style="color: rgba(0, 128, 0, 1)"> 源码注释 * Sets the cap on the number of objects that can be allocated by the pool * (checked out to clients, or idle awaiting checkout) at a given time. Use * a negative value for no limit. </span><span style="color: rgba(0, 128, 0, 1)">*/</span>
// config.setMaxActive(20);
config.setMaxTotal(20);
config.setMaxIdle(5);
/setMaxWait 在 commons-pool2-2.4.2.jar 不适用,改为了 setMaxWaitMillis/
// config.setMaxWait(1000l);
config.setMaxWaitMillis(1000l);
config.setTestOnBorrow(false);jedisPool </span>= <span style="color: rgba(0, 0, 255, 1)">new</span> JedisPool(config, "127.0.0.1", 6379<span style="color: rgba(0, 0, 0, 1)">); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">初始化非切片池 </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> slave链接</span> List<JedisShardInfo> shards = <span style="color: rgba(0, 0, 255, 1)">new</span> ArrayList<JedisShardInfo><span style="color: rgba(0, 0, 0, 1)">(); shards.add(</span><span style="color: rgba(0, 0, 255, 1)">new</span> JedisShardInfo("127.0.0.1", 6379, "master"<span style="color: rgba(0, 0, 0, 1)">)); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 构造池</span> shardedJedisPool = <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> ShardedJedisPool(config, shards); } </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">static</span><span style="color: rgba(0, 0, 0, 1)"> Jedis getJedis(){ Jedis jedis </span>=<span style="color: rgba(0, 0, 0, 1)"> jedisPool.getResource(); </span><span style="color: rgba(0, 0, 255, 1)">return</span><span style="color: rgba(0, 0, 0, 1)"> jedis ; } </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">static</span><span style="color: rgba(0, 0, 0, 1)"> ShardedJedis getShardedJedis(){ ShardedJedis shardedJedis </span>=<span style="color: rgba(0, 0, 0, 1)"> shardedJedisPool.getResource(); </span><span style="color: rgba(0, 0, 255, 1)">return</span><span style="color: rgba(0, 0, 0, 1)"> shardedJedis ; }
}
RedisOperator.java(Redis 的操作类)
package com.yoki.edu.main.dao;import java.util.Iterator;
import java.util.Set;import com.yoki.edu.utils.RedisUtils;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.ShardedJedis;
import redis.clients.jedis.SortingParams;public class RedisOperator {
</span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">void</span><span style="color: rgba(0, 0, 0, 1)"> flushDatabase() { Jedis jedis </span>=<span style="color: rgba(0, 0, 0, 1)"> RedisUtils.getJedis(); ShardedJedis shardedJedis </span>=<span style="color: rgba(0, 0, 0, 1)"> RedisUtils.getShardedJedis(); System.out.println(</span>"清空库中所有数据:" +<span style="color: rgba(0, 0, 0, 1)"> jedis.flushDB()); jedis.close(); shardedJedis.close(); } </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">void</span><span style="color: rgba(0, 0, 0, 1)"> flushDatabase(Jedis jedis) { System.out.println(</span>"清空库中所有数据:" +<span style="color: rgba(0, 0, 0, 1)"> jedis.flushDB()); } </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">void</span><span style="color: rgba(0, 0, 0, 1)"> keyOperate() { Jedis jedis </span>=<span style="color: rgba(0, 0, 0, 1)"> RedisUtils.getJedis(); ShardedJedis shardedJedis </span>=<span style="color: rgba(0, 0, 0, 1)"> RedisUtils.getShardedJedis(); System.out.println(</span>"******************************keyOperate start******************************"<span style="color: rgba(0, 0, 0, 1)">); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 清空数据</span>
flushDatabase(jedis) ;
// 判断 key 否存在
System.out.println("判断 key999 键是否存在:" + shardedJedis.exists("key999"));
System.out.println("新增 key001,value001 键值对:" + shardedJedis.set("key001", "value001"));
System.out.println("判断 key001 是否存在:" + shardedJedis.exists("key001"));
// 输出系统中所有的 key
System.out.println("新增 key002,value002 键值对:" + shardedJedis.set("key002", "value002"));
System.out.println("系统中所有键如下:");
Set<String> keys = jedis.keys("");
Iterator<String> it = keys.iterator();
while (it.hasNext()) {
String key = it.next();
System.out.println(key);
}
// 删除某个 key, 若 key 不存在,则忽略该命令。
System.out.println("系统中删除 key002:" + jedis.del("key002"));
System.out.println("判断 key002 是否存在:" + shardedJedis.exists("key002"));
// 设置 key001 的过期时间
System.out.println("设置 key001 的过期时间为 5 秒:" + jedis.expire("key001", 5));
try {
Thread.sleep(2000);
} catch (InterruptedException e) {
}
// 查看某个 key 的剩余生存时间, 单位【秒】. 永久生存或者不存在的都返回 -1
System.out.println("查看 key001 的剩余生存时间:" + jedis.ttl("key001"));
// 移除某个 key 的生存时间
System.out.println("移除 key001 的生存时间:" + jedis.persist("key001"));
System.out.println("查看 key001 的剩余生存时间:" + jedis.ttl("key001"));
// 查看 key 所储存的值的类型
System.out.println("查看 key 所储存的值的类型:" + jedis.type("key001"));
/
* 一些其他方法:1、修改键名:jedis.rename("key6", "key0");
* 2、将当前 db 的 key 移动到给定的 db 当中:jedis.move("foo", 1)
*/
jedis.close();
shardedJedis.close();
System.out.println("keyOperate end");
System.out.println("\n");
}</span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">void</span><span style="color: rgba(0, 0, 0, 1)"> stringOperate() { Jedis jedis </span>=<span style="color: rgba(0, 0, 0, 1)"> RedisUtils.getJedis(); ShardedJedis shardedJedis </span>=<span style="color: rgba(0, 0, 0, 1)"> RedisUtils.getShardedJedis(); System.out.println(</span>"******************************stringOperate start******************************"<span style="color: rgba(0, 0, 0, 1)">); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 清空数据</span>
flushDatabase(jedis) ;
System.out.println(</span>"=============增============="<span style="color: rgba(0, 0, 0, 1)">); jedis.set(</span>"key001", "value001"<span style="color: rgba(0, 0, 0, 1)">); jedis.set(</span>"key002", "value002"<span style="color: rgba(0, 0, 0, 1)">); jedis.set(</span>"key003", "value003"<span style="color: rgba(0, 0, 0, 1)">); System.out.println(</span>"已新增的3个键值对如下:"<span style="color: rgba(0, 0, 0, 1)">); System.out.println(jedis.get(</span>"key001"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(jedis.get(</span>"key002"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(jedis.get(</span>"key003"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"=============删============="<span style="color: rgba(0, 0, 0, 1)">); System.out.println(</span>"删除key003键值对:" + jedis.del("key003"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"获取key003键对应的值:" + jedis.get("key003"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"=============改============="<span style="color: rgba(0, 0, 0, 1)">); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 1、直接覆盖原来的数据</span> System.out.println("直接覆盖key001原来的数据:" + jedis.set("key001", "value001-update"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"获取key001对应的新值:" + jedis.get("key001"<span style="color: rgba(0, 0, 0, 1)">)); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 2、直接覆盖原来的数据</span> System.out.println("在key002原来值后面追加:" + jedis.append("key002", "+appendString"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"获取key002对应的新值" + jedis.get("key002"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"=============增,删,查(多个)============="<span style="color: rgba(0, 0, 0, 1)">); </span><span style="color: rgba(0, 128, 0, 1)">/**</span><span style="color: rgba(0, 128, 0, 1)"> * mset,mget同时新增,修改,查询多个键值对 等价于: jedis.set("name","ssss"); * jedis.set("jarorwar","xxxx"); </span><span style="color: rgba(0, 128, 0, 1)">*/</span><span style="color: rgba(0, 0, 0, 1)"> System.out.println(</span>"一次性新增key201,key202,key203,key204及其对应值:" + jedis.mset("key201", "value201", "key202", "value202", "key203", "value203", "key204", "value204"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println( </span>"一次性获取key201,key202,key203,key204各自对应的值:" + jedis.mget("key201", "key202", "key203", "key204"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"一次性删除key201,key202:" + jedis.del(<span style="color: rgba(0, 0, 255, 1)">new</span> String[] { "key201", "key202"<span style="color: rgba(0, 0, 0, 1)"> })); System.out.println( </span>"一次性获取key201,key202,key203,key204各自对应的值:" + jedis.mget("key201", "key202", "key203", "key204"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(); jedis.close(); shardedJedis.close(); System.out.println(</span>"*******************************stringOperate end*******************************"<span style="color: rgba(0, 0, 0, 1)">); System.out.println(</span>"\n"<span style="color: rgba(0, 0, 0, 1)">); } </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">void</span><span style="color: rgba(0, 0, 0, 1)"> stringOperate2() { Jedis jedis </span>=<span style="color: rgba(0, 0, 0, 1)"> RedisUtils.getJedis(); ShardedJedis shardedJedis </span>=<span style="color: rgba(0, 0, 0, 1)"> RedisUtils.getShardedJedis(); System.out.println(</span>"******************************stringOperate 2 start******************************"<span style="color: rgba(0, 0, 0, 1)">); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> jedis具备的功能shardedJedis中也可直接使用,下面测试一些前面没用过的方法 </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 清空数据</span> System.out.println("清空库中所有数据:" +<span style="color: rgba(0, 0, 0, 1)"> jedis.flushDB()); System.out.println(</span>"=============新增键值对时防止覆盖原先值============="<span style="color: rgba(0, 0, 0, 1)">); System.out.println(</span>"原先key301不存在时,新增key301:" + shardedJedis.setnx("key301", "value301"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"原先key302不存在时,新增key302:" + shardedJedis.setnx("key302", "value302"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"当key302存在时,尝试新增key302:" + shardedJedis.setnx("key302", "value302_new"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"获取key301对应的值:" + shardedJedis.get("key301"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"获取key302对应的值:" + shardedJedis.get("key302"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"=============超过有效期键值对被删除============="<span style="color: rgba(0, 0, 0, 1)">); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 设置key的有效期,并存储数据</span> System.out.println("新增key303,并指定过期时间为2秒" + shardedJedis.setex("key303", 2, "key303-2second"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"获取key303对应的值:" + shardedJedis.get("key303"<span style="color: rgba(0, 0, 0, 1)">)); </span><span style="color: rgba(0, 0, 255, 1)">try</span><span style="color: rgba(0, 0, 0, 1)"> { Thread.sleep(</span>3000<span style="color: rgba(0, 0, 0, 1)">); } </span><span style="color: rgba(0, 0, 255, 1)">catch</span><span style="color: rgba(0, 0, 0, 1)"> (InterruptedException e) { } System.out.println(</span>"3秒之后,获取key303对应的值:" + shardedJedis.get("key303"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"=============获取原值,更新为新值一步完成============="<span style="color: rgba(0, 0, 0, 1)">); System.out.println(</span>"key302原值:" + shardedJedis.getSet("key302", "value302-after-getset"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"key302新值:" + shardedJedis.get("key302"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"=============获取子串============="<span style="color: rgba(0, 0, 0, 1)">); System.out.println(</span>"获取key302对应值中的子串:" + shardedJedis.getrange("key302", 5, 7<span style="color: rgba(0, 0, 0, 1)">)); jedis.close(); shardedJedis.close(); System.out.println(</span>"*******************************stringOperate 2 end*******************************"<span style="color: rgba(0, 0, 0, 1)">); System.out.println(</span>"\n"<span style="color: rgba(0, 0, 0, 1)">); } </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">void</span><span style="color: rgba(0, 0, 0, 1)"> listOperate() { Jedis jedis </span>=<span style="color: rgba(0, 0, 0, 1)"> RedisUtils.getJedis(); ShardedJedis shardedJedis </span>=<span style="color: rgba(0, 0, 0, 1)"> RedisUtils.getShardedJedis(); System.out.println(</span>"******************************listOperate start******************************"<span style="color: rgba(0, 0, 0, 1)">); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 清空数据</span>
flushDatabase(jedis) ;
System.out.println(</span>"=============增============="<span style="color: rgba(0, 0, 0, 1)">); shardedJedis.lpush(</span>"stringlists", "vector"<span style="color: rgba(0, 0, 0, 1)">); shardedJedis.lpush(</span>"stringlists", "ArrayList"<span style="color: rgba(0, 0, 0, 1)">); shardedJedis.lpush(</span>"stringlists", "vector"<span style="color: rgba(0, 0, 0, 1)">); shardedJedis.lpush(</span>"stringlists", "vector"<span style="color: rgba(0, 0, 0, 1)">); shardedJedis.lpush(</span>"stringlists", "LinkedList"<span style="color: rgba(0, 0, 0, 1)">); shardedJedis.lpush(</span>"stringlists", "MapList"<span style="color: rgba(0, 0, 0, 1)">); shardedJedis.lpush(</span>"stringlists", "SerialList"<span style="color: rgba(0, 0, 0, 1)">); shardedJedis.lpush(</span>"stringlists", "HashList"<span style="color: rgba(0, 0, 0, 1)">); shardedJedis.lpush(</span>"numberlists", "3"<span style="color: rgba(0, 0, 0, 1)">); shardedJedis.lpush(</span>"numberlists", "1"<span style="color: rgba(0, 0, 0, 1)">); shardedJedis.lpush(</span>"numberlists", "5"<span style="color: rgba(0, 0, 0, 1)">); shardedJedis.lpush(</span>"numberlists", "2"<span style="color: rgba(0, 0, 0, 1)">); System.out.println(</span>"所有元素-stringlists:" + shardedJedis.lrange("stringlists", 0, -1<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"所有元素-numberlists:" + shardedJedis.lrange("numberlists", 0, -1<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"=============删============="<span style="color: rgba(0, 0, 0, 1)">); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 删除列表指定的值 ,第二个参数为删除的个数(有重复时),后add进去的值先被删,类似于出栈</span> System.out.println("成功删除指定元素个数-stringlists:" + shardedJedis.lrem("stringlists", 2, "vector"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"删除指定元素之后-stringlists:" + shardedJedis.lrange("stringlists", 0, -1<span style="color: rgba(0, 0, 0, 1)">)); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 删除区间以外的数据</span> System.out.println("删除下标0-3区间之外的元素:" + shardedJedis.ltrim("stringlists", 0, 3<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"删除指定区间之外元素后-stringlists:" + shardedJedis.lrange("stringlists", 0, -1<span style="color: rgba(0, 0, 0, 1)">)); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 列表元素出栈</span> System.out.println("出栈元素:" + shardedJedis.lpop("stringlists"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"元素出栈后-stringlists:" + shardedJedis.lrange("stringlists", 0, -1<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"=============改============="<span style="color: rgba(0, 0, 0, 1)">); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 修改列表中指定下标的值</span> shardedJedis.lset("stringlists", 0, "hello list!"<span style="color: rgba(0, 0, 0, 1)">); System.out.println(</span>"下标为0的值修改后-stringlists:" + shardedJedis.lrange("stringlists", 0, -1<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"=============查============="<span style="color: rgba(0, 0, 0, 1)">); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 数组长度</span> System.out.println("长度-stringlists:" + shardedJedis.llen("stringlists"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"长度-numberlists:" + shardedJedis.llen("numberlists"<span style="color: rgba(0, 0, 0, 1)">)); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 排序</span> <span style="color: rgba(0, 128, 0, 1)">/*</span><span style="color: rgba(0, 128, 0, 1)"> * list中存字符串时必须指定参数为alpha,如果不使用SortingParams,而是直接使用sort("list"), * 会出现"ERR One or more scores can't be converted into double" </span><span style="color: rgba(0, 128, 0, 1)">*/</span><span style="color: rgba(0, 0, 0, 1)"> SortingParams sortingParameters </span>= <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> SortingParams(); sortingParameters.alpha(); sortingParameters.limit(</span>0, 3<span style="color: rgba(0, 0, 0, 1)">); System.out.println(</span>"返回排序后的结果-stringlists:" + shardedJedis.sort("stringlists"<span style="color: rgba(0, 0, 0, 1)">, sortingParameters)); System.out.println(</span>"返回排序后的结果-numberlists:" + shardedJedis.sort("numberlists"<span style="color: rgba(0, 0, 0, 1)">)); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 子串: start为元素下标,end也为元素下标;-1代表倒数一个元素,-2代表倒数第二个元素</span> System.out.println("子串-第二个开始到结束:" + shardedJedis.lrange("stringlists", 1, -1<span style="color: rgba(0, 0, 0, 1)">)); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 获取列表指定下标的值</span> System.out.println("获取下标为2的元素:" + shardedJedis.lindex("stringlists", 2) + "\n"<span style="color: rgba(0, 0, 0, 1)">); jedis.close(); shardedJedis.close(); System.out.println(</span>"*******************************listOperate end*******************************"<span style="color: rgba(0, 0, 0, 1)">); System.out.println(</span>"\n"<span style="color: rgba(0, 0, 0, 1)">); } </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">void</span><span style="color: rgba(0, 0, 0, 1)"> setOperate() { Jedis jedis </span>=<span style="color: rgba(0, 0, 0, 1)"> RedisUtils.getJedis(); ShardedJedis shardedJedis </span>=<span style="color: rgba(0, 0, 0, 1)"> RedisUtils.getShardedJedis(); System.out.println(</span>"******************************setOperate start******************************"<span style="color: rgba(0, 0, 0, 1)">); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 清空数据</span>
flushDatabase(jedis) ;
System.out.println(</span>"=============增============="<span style="color: rgba(0, 0, 0, 1)">); System.out.println(</span>"向sets集合中加入元素element001:" + jedis.sadd("sets", "element001"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"向sets集合中加入元素element002:" + jedis.sadd("sets", "element002"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"向sets集合中加入元素element003:" + jedis.sadd("sets", "element003"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"向sets集合中加入元素element004:" + jedis.sadd("sets", "element004"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"查看sets集合中的所有元素:" + jedis.smembers("sets"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(); System.out.println(</span>"=============删============="<span style="color: rgba(0, 0, 0, 1)">); System.out.println(</span>"集合sets中删除元素element003:" + jedis.srem("sets", "element003"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"查看sets集合中的所有元素:" + jedis.smembers("sets"<span style="color: rgba(0, 0, 0, 1)">)); </span><span style="color: rgba(0, 128, 0, 1)">/*</span><span style="color: rgba(0, 128, 0, 1)"> * System.out.println("sets集合中任意位置的元素出栈:"+jedis.spop("sets"));//注: * 出栈元素位置居然不定?--无实际意义 * System.out.println("查看sets集合中的所有元素:"+jedis.smembers("sets")); </span><span style="color: rgba(0, 128, 0, 1)">*/</span><span style="color: rgba(0, 0, 0, 1)"> System.out.println(); System.out.println(</span>"=============改============="<span style="color: rgba(0, 0, 0, 1)">); System.out.println(); System.out.println(</span>"=============查============="<span style="color: rgba(0, 0, 0, 1)">); System.out.println(</span>"判断element001是否在集合sets中:" + jedis.sismember("sets", "element001"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"循环查询获取sets中的每个元素:"<span style="color: rgba(0, 0, 0, 1)">); Set</span><String> set = jedis.smembers("sets"<span style="color: rgba(0, 0, 0, 1)">); Iterator</span><String> it =<span style="color: rgba(0, 0, 0, 1)"> set.iterator(); </span><span style="color: rgba(0, 0, 255, 1)">while</span><span style="color: rgba(0, 0, 0, 1)"> (it.hasNext()) { Object obj </span>=<span style="color: rgba(0, 0, 0, 1)"> it.next(); System.out.println(obj); } System.out.println(); System.out.println(</span>"=============集合运算============="<span style="color: rgba(0, 0, 0, 1)">); System.out.println(</span>"sets1中添加元素element001:" + jedis.sadd("sets1", "element001"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"sets1中添加元素element002:" + jedis.sadd("sets1", "element002"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"sets1中添加元素element003:" + jedis.sadd("sets1", "element003"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"sets1中添加元素element002:" + jedis.sadd("sets2", "element002"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"sets1中添加元素element003:" + jedis.sadd("sets2", "element003"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"sets1中添加元素element004:" + jedis.sadd("sets2", "element004"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"查看sets1集合中的所有元素:" + jedis.smembers("sets1"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"查看sets2集合中的所有元素:" + jedis.smembers("sets2"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"sets1和sets2交集:" + jedis.sinter("sets1", "sets2"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"sets1和sets2并集:" + jedis.sunion("sets1", "sets2"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"sets1和sets2差集:" + jedis.sdiff("sets1", "sets2"));<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 差集:set1中有,set2中没有的元素</span>
jedis.close();
shardedJedis.close();
System.out.println("setOperate end");
System.out.println("\n");
}</span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">void</span><span style="color: rgba(0, 0, 0, 1)"> sortedSetOperate() { Jedis jedis </span>=<span style="color: rgba(0, 0, 0, 1)"> RedisUtils.getJedis(); ShardedJedis shardedJedis </span>=<span style="color: rgba(0, 0, 0, 1)"> RedisUtils.getShardedJedis(); System.out.println(</span>"******************************sortedSetOperate start******************************"<span style="color: rgba(0, 0, 0, 1)">); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 清空数据</span>
flushDatabase(jedis) ;
System.out.println(</span>"=============增============="<span style="color: rgba(0, 0, 0, 1)">); System.out.println(</span>"zset中添加元素element001:" + shardedJedis.zadd("zset", 7.0, "element001"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"zset中添加元素element002:" + shardedJedis.zadd("zset", 8.0, "element002"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"zset中添加元素element003:" + shardedJedis.zadd("zset", 2.0, "element003"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"zset中添加元素element004:" + shardedJedis.zadd("zset", 3.0, "element004"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"zset集合中的所有元素:" + shardedJedis.zrange("zset", 0, -1));<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 按照权重值排序</span>
System.out.println();
System.out.println(</span>"=============删============="<span style="color: rgba(0, 0, 0, 1)">); System.out.println(</span>"zset中删除元素element002:" + shardedJedis.zrem("zset", "element002"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"zset集合中的所有元素:" + shardedJedis.zrange("zset", 0, -1<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(); System.out.println(</span>"=============改============="<span style="color: rgba(0, 0, 0, 1)">); System.out.println(); System.out.println(</span>"=============查============="<span style="color: rgba(0, 0, 0, 1)">); System.out.println(</span>"统计zset集合中的元素中个数:" + shardedJedis.zcard("zset"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"统计zset集合中权重某个范围内(1.0——5.0),元素的个数:" + shardedJedis.zcount("zset", 1.0, 5.0<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"查看zset集合中element004的权重:" + shardedJedis.zscore("zset", "element004"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"查看下标1到2范围内的元素值:" + shardedJedis.zrange("zset", 1, 2<span style="color: rgba(0, 0, 0, 1)">)); jedis.close(); shardedJedis.close(); System.out.println(</span>"*******************************sortedSetOperate end*******************************"<span style="color: rgba(0, 0, 0, 1)">); System.out.println(</span>"\n"<span style="color: rgba(0, 0, 0, 1)">); } </span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">void</span><span style="color: rgba(0, 0, 0, 1)"> hashOperate() { Jedis jedis </span>=<span style="color: rgba(0, 0, 0, 1)"> RedisUtils.getJedis(); ShardedJedis shardedJedis </span>=<span style="color: rgba(0, 0, 0, 1)"> RedisUtils.getShardedJedis(); System.out.println(</span>"******************************hashOperate start******************************"<span style="color: rgba(0, 0, 0, 1)">); </span><span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)"> 清空数据</span>
flushDatabase(jedis) ;
System.out.println(</span>"=============增============="<span style="color: rgba(0, 0, 0, 1)">); System.out.println(</span>"hashs中添加key001和value001键值对:" + shardedJedis.hset("hashs", "key001", "value001"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"hashs中添加key002和value002键值对:" + shardedJedis.hset("hashs", "key002", "value002"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"hashs中添加key003和value003键值对:" + shardedJedis.hset("hashs", "key003", "value003"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"新增key004和4的整型键值对:" + shardedJedis.hincrBy("hashs", "key004", 4l<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"hashs中的所有值:" + shardedJedis.hvals("hashs"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(); System.out.println(</span>"=============删============="<span style="color: rgba(0, 0, 0, 1)">); System.out.println(</span>"hashs中删除key002键值对:" + shardedJedis.hdel("hashs", "key002"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"hashs中的所有值:" + shardedJedis.hvals("hashs"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(); System.out.println(</span>"=============改============="<span style="color: rgba(0, 0, 0, 1)">); System.out.println(</span>"key004整型键值的值增加100:" + shardedJedis.hincrBy("hashs", "key004", 100l<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"hashs中的所有值:" + shardedJedis.hvals("hashs"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(); System.out.println(</span>"=============查============="<span style="color: rgba(0, 0, 0, 1)">); System.out.println(</span>"判断key003是否存在:" + shardedJedis.hexists("hashs", "key003"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"获取key004对应的值:" + shardedJedis.hget("hashs", "key004"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"批量获取key001和key003对应的值:" + shardedJedis.hmget("hashs", "key001", "key003"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"获取hashs中所有的key:" + shardedJedis.hkeys("hashs"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(</span>"获取hashs中所有的value:" + shardedJedis.hvals("hashs"<span style="color: rgba(0, 0, 0, 1)">)); System.out.println(); jedis.close(); shardedJedis.close(); System.out.println(</span>"*******************************hashOperate end*******************************"<span style="color: rgba(0, 0, 0, 1)">); }
}
RunMain.java(程序主入口)
package com.yoki.edu.main;
import com.yoki.edu.main.dao.RedisOperator;
public class RunMain {
</span><span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">static</span> <span style="color: rgba(0, 0, 255, 1)">void</span><span style="color: rgba(0, 0, 0, 1)"> main(String[] args) {
RedisOperator op </span>= <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> RedisOperator() ;
op.flushDatabase();
op.KeyOperate();
op.StringOperate();
op.ListOperate();
op.SetOperate();
op.SortedSetOperate();
op.HashOperate();
}
}
注意:程序运行前,Redis(命令:redis-server)必须先打开,不然会出现链接错误
运行结果如下:
******************************keyOperate start****************************** 清空库中所有数据:OK 判断 key999 键是否存在:false 新增 key001,value001 键值对:OK 判断 key001 是否存在:true 新增 key002,value002 键值对:OK 系统中所有键如下: key002 key001 系统中删除 key002: 1 判断 key002 是否存在:false 设置 key001 的过期时间为 5 秒:1 查看 key001 的剩余生存时间:3 移除 key001 的生存时间:1 查看 key001 的剩余生存时间:-1 查看 key 所储存的值的类型:string *******************************keyOperate end*******************************
******************************stringOperate start****************************** 清空库中所有数据:OK ============= 增 ============= 已新增的 3 个键值对如下: value001 value002 value003 ============= 删 ============= 删除 key003 键值对:1 获取 key003 键对应的值:null ============= 改 ============= 直接覆盖 key001 原来的数据:OK 获取 key001 对应的新值:value001-update 在 key002 原来值后面追加:21 获取 key002 对应的新值 value002+appendString ============= 增,删,查(多个)============= 一次性新增 key201,key202,key203,key204 及其对应值:OK 一次性获取 key201,key202,key203,key204 各自对应的值:[value201, value202, value203, value204] 一次性删除 key201,key202:2 一次性获取 key201,key202,key203,key204 各自对应的值:[null, null, value203, value204]stringOperate end
stringOperate 2 start
清空库中所有数据:OK
============= 新增键值对时防止覆盖原先值 =============
原先 key301 不存在时,新增 key301:1
原先 key302 不存在时,新增 key302:1
当 key302 存在时,尝试新增 key302:0
获取 key301 对应的值:value301
获取 key302 对应的值:value302
============= 超过有效期键值对被删除 =============
新增 key303,并指定过期时间为 2 秒 OK
获取 key303 对应的值:key303-2second
3 秒之后,获取 key303 对应的值:null
============= 获取原值,更新为新值一步完成 =============
key302 原值:value302
key302 新值:value302-after-getset
============= 获取子串 =============
获取 key302 对应值中的子串:302
stringOperate 2 end
listOperate start
清空库中所有数据:OK
============= 增 =============
所有元素-stringlists:[HashList, SerialList, MapList, LinkedList, vector, vector, ArrayList, vector]
所有元素-numberlists:[2, 5, 1, 3]
============= 删 =============
成功删除指定元素个数-stringlists:2
删除指定元素之后-stringlists:[HashList, SerialList, MapList, LinkedList, ArrayList, vector]
删除下标 0-3 区间之外的元素:OK
删除指定区间之外元素后-stringlists:[HashList, SerialList, MapList, LinkedList]
出栈元素:HashList
元素出栈后-stringlists:[SerialList, MapList, LinkedList]
============= 改 =============
下标为 0 的值修改后-stringlists:[hello list!, MapList, LinkedList]
============= 查 =============
长度-stringlists:3
长度-numberlists:4
返回排序后的结果-stringlists:[LinkedList, MapList, hello list!]
返回排序后的结果-numberlists:[1, 2, 3, 5]
子串-第二个开始到结束:[MapList, LinkedList]
获取下标为 2 的元素:LinkedListlistOperate end
setOperate start
清空库中所有数据:OK
============= 增 =============
向 sets 集合中加入元素 element001:1
向 sets 集合中加入元素 element002:1
向 sets 集合中加入元素 element003:1
向 sets 集合中加入元素 element004:1
查看 sets 集合中的所有元素:[element004, element003, element002, element001]============= 删 =============
集合 sets 中删除元素 element003:1
查看 sets 集合中的所有元素:[element004, element002, element001]============= 改 =============
============= 查 =============
判断 element001 是否在集合 sets 中:true
循环查询获取 sets 中的每个元素:
element004
element002
element001============= 集合运算 =============
sets1 中添加元素 element001:1
sets1 中添加元素 element002:1
sets1 中添加元素 element003:1
sets1 中添加元素 element002:1
sets1 中添加元素 element003:1
sets1 中添加元素 element004:1
查看 sets1 集合中的所有元素:[element003, element002, element001]
查看 sets2 集合中的所有元素:[element004, element003, element002]
sets1 和 sets2 交集:[element003, element002]
sets1 和 sets2 并集:[element003, element001, element002, element004]
sets1 和 sets2 差集:[element001]
setOperate end
sortedSetOperate start
清空库中所有数据:OK
============= 增 =============
zset 中添加元素 element001:1
zset 中添加元素 element002:1
zset 中添加元素 element003:1
zset 中添加元素 element004:1
zset 集合中的所有元素:[element003, element004, element001, element002]============= 删 =============
zset 中删除元素 element002:1
zset 集合中的所有元素:[element003, element004, element001]============= 改 =============
============= 查 =============
统计 zset 集合中的元素中个数:3
统计 zset 集合中权重某个范围内(1.0——5.0),元素的个数:2
查看 zset 集合中 element004 的权重:3.0
查看下标 1 到 2 范围内的元素值:[element004, element001]
sortedSetOperate end
hashOperate start
清空库中所有数据:OK
============= 增 =============
hashs 中添加 key001 和 value001 键值对:1
hashs 中添加 key002 和 value002 键值对:1
hashs 中添加 key003 和 value003 键值对:1
新增 key004 和 4 的整型键值对:4
hashs 中的所有值:[value001, value002, value003, 4]============= 删 =============
hashs 中删除 key002 键值对:1
hashs 中的所有值:[value001, value003, 4]============= 改 =============
key004 整型键值的值增加 100:104
hashs 中的所有值:[value001, value003, 104]============= 查 =============
判断 key003 是否存在:true
获取 key004 对应的值:104
批量获取 key001 和 key003 对应的值:[value001, value003]
获取 hashs 中所有的 key:[key004, key003, key001]
获取 hashs 中所有的 value:[value001, value003, 104]hashOperate end